Erik/Edmund
This might be interesting to you. they're just jpegs which is of limited use but gives something to look at.. Contax glass vs Leica S glass on S2..http://www.reddotforum.com/showthread.php/1354-Leica-S2-and-Contax-45-90-4.5
Rob
I have the Contax 45-90mm and it's an impressive zoom lens, on Leica S it is an ideal 36-72mm (35mm equivalent) which it can be very handy… IMO, (it shows a bit on the images posted) the Zeiss C645 glass (all of it, not only the zoom) excels when there is back-light or back light reflections, because of the superb anti flare coatings that traditionally Zeiss offers… This makes the Zeiss lenses look more contrasty than others and it adds (depending on the nature of the scene) up to 2/3rds of a stop in HL DR extension… Honestly, there is little to fear shooting into the sun with (all) Zeiss C645 glass… If one looks carefully to the posted pictures, he'll notice a slight HL DR advance with the Zeiss lens, although the scene isn't one of extreme contrast.
